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Display-camera systems enable a large range of vision applications in everyday environments, but require calibrating the pose of the display with respect to the camera. Recently, a promising approach is introduced that analyzes corneal reflections from face images. While having several benefits, the described implementation requires controlled and unnatural conditions, manual elaboration, and offline...
We present a novel computer vision driven display system enabling 3D scene visualization using standard 2D display hardware and a pair of calibrated web cameras. Our system requires no worn or other special hardware. Rather than producing a depth illusion through disparity, we deliver a full volumetric 3D visualization — enabling users to interactively explore 3D scenes by varying their viewing position...
The development of tracked 3D displays is based on real-time technologies providing precise and robust eye location detection. The paper focuses on tracking approaches which have been developed within the European HELIUM3D project. A first system uses multiple common video cameras and a second approach is combining high resolution and depth camera technology. Flexible and scalable software has been...
Recent face recognition strategies tend to solve the face recognition problem from a 3D perspective. In this paper, we investigate a new 3D face image acquisition and capturing system, where we demonstrate our test-bed and the initial results for 3D face image feature characteristic and extraction. In our test-bed, we utilize the Dimensional Imaging's standard DI3D system which is designed to capture...
In this paper, we present a vision-based human-computer interaction system, which integrates control components using multiple gestures, including eye gaze, head pose, hand pointing, and mouth motions. To track head, eye, and mouth movements, we present a two-camera system that detects the face from a fixed, wide-angle camera, estimates a rough location for the eye region using an eye detector based...
An automatic human face sculpture is presented in this paper. The system is consisted of a 3D shape measurement unit and a reconstruction or process unit. Some key techniques are adopted and a flow chart of this technology is described. A statuary example is displayed and the future improving is discussed.
The ability to capture the direction the eyes point in while the subject is a distance away from the camera offers the potential for intuitive human-computer interfaces, allowing for a greater interactivity, more intelligent HCI behavior, and increased flexibility. In this paper, we present a two-camera system that detects the face from a fixed, wide-angle camera, estimates a rough location for the...
Natural human-robot interaction requires leveraging viewing direction information in order to recognize, respond to, and even emulate human behavior. Knowledge of the eye gaze and point of regard gives us insight into what the subject is interested in and/or who the subject is addressing. In this paper, we present a novel eye gaze estimation approach for point-of-regard (PoG) tracking. To allow for...
We present a novel technique for calibrating display-camera systems from reflections in the user's eyes. Display-camera systems enable a range of vision applications that need controlled illumination, including 3D object reconstruction, facial modeling and human computer interaction. One important issue, though, is the geometric calibration of the display, which requires additional hardware and tedious...
This paper presents a method for multi-view 3D modeling of human bodies using virtual stereopsis. The algorithm expands and improves the method used in, but unlike that method, our approach does not require multiple calibrated cameras and/or carefully-positioned turn tables. Instead, an algorithm using SIFT feature extraction is employed and an accurate motion estimation is performed to calculate...
This paper presents a novel approach for estimating 3D head pose in single-view video sequences acquired by an uncalibrated camera. Following the initialization by a face detector, a tracking technique localizes the faces in each frame in the video sequence. Head pose estimation is performed by using a structure from motion and self-calibration technique in a sequential way. The proposed method was...
We present a contribution to the digital preservation of artworks made by the Wauja and Karaja indians; both communities acknowledged for their expertise in ceramic artworks and the symbolism embedded in their art. Our goal is to enhance the texture color quality of 3D models obtained from color and depth images of a laser scanner. Although laser scanners offer high-performance regarding depth information,...
This paper proposes a 3D eye gaze estimation and tracking algorithm based on facial feature tracking using a single camera. Instead of using the infrared (IR) lights and the corneal reflections (glint), this algorithm estimates the 3D visual axis using the tracked facial feature points. For this, we first introduce an extended 3D eye model which includes both the eyeball and the eye-corners. Based...
The iris is a highly accurate biometric identifier. However widespread adoption is hindered by the difficulty of capturing high-quality iris images with minimal user co-operation. This paper describes a first-generation prototype iris identification system designed for stand-off cooperative access control. This system identifies individuals who stand in front of and face the system after 3.2 seconds...
In this paper we track a personpsilas region of interest by both recovering the 3D trajectory in the indoor environment and estimating the head pose indicating the attention direction. The above two attributes of the person can be combined to provide useful information for smart home and other smart indoor environment applications. There are two main differentiations of the work in this paper. First,...
We propose a gaze estimation method that substantially relaxes the practical constraints possessed by most conventional methods. Gaze estimation research has a long history, and many systems including some commercial schemes have been proposed. However, the application domain of gaze estimation is still limited (e.g, measurement devices for HCI issues, input devices for VDT works) due to the limitations...
3D object design has many applications including flexible 3D sketch input in CAD, computer game, webpage content design, image based object modeling, and 3D object retrieval. Most current 3D object design tools work on a 2D drawing plane such as computer screen or tablet, which is often inflexible with one dimension lost. On the other hand, virtual reality based methods have the drawbacks that there...
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